Silicon nitride has better thermal shock resistance than other ceramics. Combined with high strength, low thermal expansion, good corrosion resistance, and fracture toughness, silicon nitride is often used in the aerospace or automotive industries. Other applications such as burner nozzles, molten metal processing, etc. Electrical insulation, good corrosion resistance, medium operating temperature (1300 °C), structural ceramics, good mechanical properties, low thermal expansion, high thermal conductivity, very good thermal shock stability, and low specific gravity.
Silicon nitride (Si₃N₄) is a high-performance engineering ceramic material with a gray appearance. It is well known for its high fracture toughness, excellent thermal shock resistance, low density, and strong resistance to molten metal infiltration.
Because of these outstanding properties, silicon nitride is widely used in extreme and harsh working environments where high temperature, mechanical stress, and wear resistance are required.
It is commonly applied in automotive internal combustion engine components, welding torch nozzles, and other parts exposed to high-temperature or severe operating conditions. In addition, its excellent wear resistance and mechanical strength have significantly expanded its use in bearing components, rotating shaft systems, and semiconductor manufacturing equipment.
Silicon nitride ceramics exhibit a unique combination of mechanical, thermal, and chemical properties:
Silicon nitride ceramics combine high strength, high toughness, low density, and excellent thermal shock resistance, making them one of the most reliable advanced ceramics for both mechanical and semiconductor applications.
They are especially suitable for demanding environments involving:
